Auto discover gradle modules

settings.gradle.kts

 includeModulesDirs(
      "features",
      "usecases",
      "repositories",
      "libraries",
      "templates",
)

/**
 * Look into [dirs] for existing modules.
 *
 * Use [excludedModules] to filter modules that you want to ignore,
 * each item being a full module qualifier (example ":usecases:toto").
 *
 */
fun includeModulesDirs(vararg dirs: String, excludedModules: Array<String> = emptyArray()) {
    val foundModules = dirs
            .map(::File)
            .flatMap(::findGradleModules)
            .map { it.path.replace(File.separatorChar, ':') }
            .filterNot { it in excludedModules }
            .sorted()
    include(*foundModules.toTypedArray())
}

fun findGradleModules(dir: File): List<File> {
    return dir.listFiles { potentialModule ->
        potentialModule.isDirectory &&
            potentialModule.isNotBlacklisted &&
            potentialModule.containsGradleScript()
    }.orEmpty().flatMap {
        findGradleModules(it) + it
    }.toList()
}

val File.isNotBlacklisted: Boolean
    get() = name !in arrayOf("build", "src")

fun File.containsGradleScript(): Boolean {
    val gradleScripts = listFiles { file -> file.isGradleScript }.orEmpty()
    if (gradleScripts.size > 1) {
        throw kotlin.IllegalStateException("More than one .gradle[.kts] files found in $this")
    }
    return gradleScripts.isNotEmpty()
}

val File.isGradleScript: Boolean get() = name.endsWith(".gradle") || name.endsWith(".gradle.kts")